Review on π High-performance OTC 3181 Battery Load Tester - 130 Amp Heavy-Duty by Mike Fedd
Robust, reliable and accurate
I needed a battery tester to identify the dead batteries in my solar system. Sunpro does a really good job of stress testing batteries. Each battery only takes 10 seconds, which helps me find batteries in the storage array that may need attention. In combination with the battery hydrometer, I can quickly identify and fix battery problems. It also works great with car batteries. My friend thought his alternator had failed but when I tested his battery with Sunpro it indicated the battery was dead. He replaced the battery, not the alternator, and hasn't had any problems since. As a warning, read the instructions and warnings carefully. This is a resistive tester, so the back cover gets very hot. This is a well made product and I highly recommend it.
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